Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Exacanthomysis marsailiae and Nipponomysis neolingvura, two new species of mysid (crustacea: mysida: mysidae) from the east coast of Korea

  • Hyung Seop Kim (Department of Marine Biological Resource and Aquaculture, Kunsan National University) ;
  • Soo-Gun Jo (Jeonbuk Sea Grant Center)
  • Received : 2023.11.15
  • Accepted : 2023.12.04
  • Published : 2024.03.31
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Abstract

Exacanthomysis marsailiae and Nipponomysis neolingvura are described as new species based on specimens collected with a light trap off the East Sea coast of Korea. E. marsailiae is closely related to Exacanthomysis alaskensis (Banner, 1954) and Exacanthomysis borealis (Banner, 1954). However, E. marsailiae can be distinguished from these species by having slightly grouped spines on lateral margins near the telson apex, and the exopod of male's fourth pleopod more than twice as long as the endopod. N. neolingvura can be distinguished from its closest relative, Nipponomysis lingvura (Murano, 1977), in that the lateral sides of the telson are all armed with spines without any empty space, and that the second segment of the fourth male pleopod is longer than the third one. The report of E. marsailiae from the East Sea of Korea extends the distribution range of the genus Exacanthomysis from the high-latitude North Pacific southward to the mid-latitude waters of the western Pacific. The morphological characteristics of the two current new species are also compared with those of their congeners.

Keywords

Acknowledgement

We would like to thank Dr. Sang-hui Lee (National Marine Biodiversity Institute) for providing the opportunity for this research. We would also like to gratefully thank the two reviewers for their helpful comments on the manuscript.

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